Montana Child Support Calculator
Planning estimate for Montana child support using a generic gross-income heuristic. Does not implement the state guideline or determine a court order.
Estimate only — these are not official figures
The entered gross incomes determine each parent’s share of a generic budget, to which the entered annual costs are added. Nights designate the modeled payer; the calculation does not apply Montana’s uniform guidelines or determine a deviation. This tool does not implement the state guideline; none is an official guideline amount.
Do not rely on these amounts for budgeting or payment. For exact amounts, check the Montana Child Support Services Division: https://dphhs.mt.gov/cssd/.
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Pre-filled: Montana median income
Additional Details
Modeled Monthly Planning Amount
Estimated • Based on your inputs
Derived Annual Planning Amount
$16,116.81
Detailed Breakdown
Disclaimer: This calculator provides estimates for informational purposes only. Results should not be considered financial, tax, or legal advice. Consult a qualified professional for your specific situation.
How This Calculator Works
Calculation methodology and assumptions
The entered gross incomes determine each parent’s share of a generic budget, to which the entered annual costs are added. Nights designate the modeled payer; the calculation does not apply Montana’s uniform guidelines or determine a deviation. This tool does not implement the state guideline; none is an official guideline amount.
Key State Information
Melson Formula guideline context: Montana Code §40-4-204 requires courts to apply the uniform guidelines and identifies a child’s medical and educational needs, day-care costs and parenting plan among relevant factors. A court finding a guideline amount unjust or inappropriate must give reasons. This site does not apply those guidelines.
Example Calculation
Planning around care expenses
One child, incomes of $62,000 and $36,000, 240 Parent 1 nights, $3,600 care and $2,400 insurance produce a $693.67 monthly proxy for Parent 2. Inputs are annual except nights. It does not implement the Melson formula.
Result: With three children, $50,000 and $32,000 income, 190 nights, $7,200 care and $3,000 insurance, Parent 2’s proxy is $1,051.71 monthly. The statutory guideline and deviation assessment are separate.
StateCalc Team
Editorial Team
The StateCalc team builds financial calculators using data from official government sources including the IRS, U.S. Census Bureau, BLS, and state revenue departments. All formulas are validated by an automated test suite and cross-referenced against published data.
Our editorial standardsFrequently Asked Questions
Does this tool decide whether to depart from Montana guidelines?
No. Section 40-4-204 addresses court findings and reasons for departing from a guideline amount; the tool does not calculate that amount or make those findings.
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